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<TITLE>JavaScript Source Code 3000:  Misc.:  Stopwatch</TITLE>
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<META NAME="date" CONTENT="2000-09-09">
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<META NAME="author" CONTENT="JavaScript Source Code 3000">
<META NAME="section" CONTENT="Miscellaneous">
<META NAME="description" CONTENT="It's always fun to play with a stopwatch - even in JavaScript!  This stopwatch does even include the basic features of Start, Stop, and of course, Reset.">

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var ms = 0;
var state = 0;
function startstop() {
if (state == 0) {
state = 1;
then = new Date();
then.setTime(then.getTime() - ms);
} else {
state = 0;
now = new Date();
ms = now.getTime() - then.getTime();
document.stpw.time.value = ms;
   }
}
function swreset() {
state = 0;
ms = 0;
document.stpw.time.value = ms;
}
function display() {
setTimeout("display();", 50);
if (state == 1)  {now = new Date();
ms = now.getTime() - then.getTime();
document.stpw.time.value = ms;
   }
}
// End -->
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<img src="../img/arrow.gif" /img/arrow.gif" height=13 width=7 border=0 alt="}"> <FONT COLOR="#006666">Stopwatch</FONT></b></FONT><BR>
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<!-- Description --><!--content_start-->

It's always fun to play with a stopwatch - even in JavaScript!  This stopwatch does even include the basic features of Start, Stop, and of course, Reset.  By the way, the time is not the regular seconds readout that you are probably used to.  It displays in milliseconds!  Therefore, 1000 = 1 sec, 5000 = 5 sec, etc...<br><hr>
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<!--  Demonstration -->
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<FORM NAME="stpw">
Time:
<INPUT TYPE="text" Name="time">
<INPUT TYPE="BUTTON" Name="ssbutton" VALUE="Start/Stop" onClick="startstop()">
<INPUT TYPE="BUTTON" NAME="reset" VALUE="Reset" onClick="swreset()">
</FORM>
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<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>JavaScript Source Code 3000:  Misc.:  Stopwatch</b>
<p>Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as NotePad or SimpleText) and save (Control-s or Apple-s).  The script is yours!<br><br></font></td></tr>
<tr><td BGCOLOR=yellow ALIGN=CENTER>
<form NAME="copy">

<DIV align="center">
<input type=button value="Highlight All" onClick="javascript:this.form.txt.focus();this.form.txt.select();">&nbsp;&nbsp;&nbsp;&nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size:  1.42 KB  " size="24">
</DIV>

<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>

&lt;!-- THREE STEPS TO INSTALL STOPWATCH:

   1.  Paste the coding into the HEAD of your HTML document
   2.  Copy the onLoad event handler into the BODY tag
   3.  Add the last code into the BODY of your HTML document  --&gt;

&lt;!-- STEP ONE: Copy this code into the HEAD of your HTML document  --&gt;

&lt;HEAD&gt;

&lt;SCRIPT LANGUAGE="JavaScript"&gt;

&lt;! &gt;
&lt;! &gt;

&lt;!-- Begin
var ms = 0;
var state = 0;
function startstop() {
if (state == 0) {
state = 1;
then = new Date();
then.setTime(then.getTime() - ms);
} else {
state = 0;
now = new Date();
ms = now.getTime() - then.getTime();
document.stpw.time.value = ms;
   }
}
function swreset() {
state = 0;
ms = 0;
document.stpw.time.value = ms;
}
function display() {
setTimeout("display();", 50);
if (state == 1)  {now = new Date();
ms = now.getTime() - then.getTime();
document.stpw.time.value = ms;
   }
}
// End --&gt;
&lt;/SCRIPT&gt;

&lt;!-- STEP TWO: Add this onLoad event handler into the BODY tag  --&gt;

&lt;BODY onLoad="display()"&gt;

&lt;!-- STEP THREE: Put this code into the BODY of your HTML document  --&gt;

&lt;CENTER&gt;
&lt;FORM NAME="stpw"&gt;
Time:
&lt;INPUT TYPE="text" Name="time"&gt;
&lt;INPUT TYPE="BUTTON" Name="ssbutton" VALUE="Start/Stop" onClick="startstop()"&gt;
&lt;INPUT TYPE="BUTTON" NAME="reset" VALUE="Reset" onClick="swreset()"&gt;
&lt;/FORM&gt;
&lt;/CENTER&gt;

 

&lt;!-- Script Size:  1.42 KB  --&gt;
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